Automatic cooker extract?

[Tipper]

Is there a gizmo that will switch on the kitchen/cooker extract fan automatically when the electric cooker/grill is turned on?

I'm really fed up with my wife forgetting to turn on the fan when she turns on the cooker!

I'm thinking maybe perhaps an IR detector sited over the hob?

 

[oharaf]

Beat her!!!!! and then sell her jewelery!!!!


Not aware of anything that will start the extractor when you start cooking, is the cooker gas or elec?

 

[Chri5]

With the timer requirements most cookers are left 'on'. If they weren't and your wife turns the cooker on at the cooker switch it would be easy enough to wire an extractor via the switched side of the cooker point (and an in line f/spur).

But I doubt that helps

Proximity sensor would be a bit OTT, but would work if designed and adjusted to sense body movement by the cooker.

A thermistor switches at temperature, I'm sure a temperature activated sensor could be sourced and used. So anything above say 35 deg C activated the fan.

 

[LiamPope]

Install a smoke detector under the extractor hood. Tell the wife the alarm means 'turn the blasted fan on'. You'd then have to remove the battery and be sure to replace it before the next day's dinner is cooked. She'd soon get the message. Or leave you.

Alternatively, you could use a current transformer switch to operate the extractor which would detect the load on the cooker circuit.

Liam

 

[ColJack]

a current switch on the live feed to the cooker, switching a relay or contactor..

 

[bernardgreen]

Feed the cooker supply via a contactor the coil of which is fed from the supply to the fan in the extractor. No extraction. no power to the cooker.

Simples..........

 

[TicklyT]

Fit a humidistat in the cooker hood, like a bathroom extractor?

 

[LiamPope]

a current switch on the live feed to the cooker, switching a relay or contactor..

The 1A/230V version of that CT switch could probably directly switch the extractor without a relay/contactor. My big 120cm 3-speed + lighting hood is rated 190W max. 1A fuse fitted in FCU/plug of extractor of course.

Liam

 

[Tipper]

a current switch on the live feed to the cooker, switching a relay or contactor..

Great just the sort of thing I need. Thanks

 

[Tipper]

Install a smoke detector under the extractor hood. Tell the wife the alarm means 'turn the blasted fan on'. You'd then have to remove the battery and be sure to replace it before the next day's dinner is cooked. She'd soon get the message. Or leave you.
Liam

But then again this idea has a certain.....something!

 

[Tipper]

Feed the cooker supply via a contactor the coil of which is fed from the supply to the fan in the extractor. No extraction. no power to the cooker.

Simples..........

Also good but could be really annoying

 

[Tipper]

Seriously, thanks for all your ideas guys.