Any good ideas?

[hightower]

Please see the attached files, I'm needing some ideas and possibly some out of the box thinking.

This is a surround for an old range cooker in that house of my mate's that I'm rewiring. He's planning to put a range style cooker here but we need to think about extraction. At the top is a concrete lintel, 1620mm is the height of the opening, and there's some ducting in the corner as you can see - this is 150mm diameter, and although it can be cut to shorten, it would be a pain to remove and replace.

Originally we were going to build down a false layer to hold a hood, but given the new range would be 900m height this would bring the gap between cooker and hood to about 500mm. So the next idea was to fit a standard kitchen extractor unit (like a wall mounted one) to the current ducting, but I don't think it would be fit for purpose and would get splattered in grease. If we did go down this route however, I think LED tape would be up to the job of lighting the area in place of the lights built in to a typical hood.

So, any bright ideas anyone, extraction mainly.

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[Pat H]

Does seem to make sense to try and use the current flue for the extraction. Is it very sooty? will that fall back down into the extractor unit?

Could an extractor be mounted above the lintel and knock back into the flue?

 

[Andy78]

Knock chimney breast out and use a standard wall mounted extractor ?

Either that or remove the cover from a wall mounted extractor so it can be lifted higher. Build a custom cover and mount for it.

 

[The Ghost]

How's about an in-line fan?

 

[telectrix]

fit a new lintel 4 brick courses above existing lintel. then knock out old lintel and the 4 course of bricks . that will give space for a normal extractor hood.

 

[hightower]

I know the removal of the lintel is going to be the best solution, but he's made it very clear to me that he doesn't want to touch it. I do like the idea of using some sort of extractor with a custom grill - that could be a way forward.

 

[Richard Burns]

A downdraft extractor with the duct run back up in the side of the chimney?

 

[Wilko]

I was scratching my head over coffee on HT's problem and have learnt from these great ideas. For me, making the opening the right size would be the go, as you are back to standard products and performance. Cheers.

 

[Andy78]

I know the removal of the lintel is going to be the best solution, but he's made it very clear to me that he doesn't want to touch it. I do like the idea of using some sort of extractor with a custom grill - that could be a way forward.

At that height you will struggle to be honest. Above a gas burner the minimum clearance is usually 700mm to avoid heat damage to the extractor.

 

[telectrix]

700mm is fine until you do what i did..... left the chip pan on and forgot about it. extractor melted, along with wall units charred and smoke damage to ceiling etc. now got a dual basket deep fat fryer set up in garage, far less grease stains in the kitchen as an additional benefit.

 

[hightower]

I've ran the ideas so far past him, he loves the downdraft extractor, but not the price of it. He's really wanting to avoid working on moving the lintel, and as it stands is leaning strongly towards a fan mounted to the ducting and some LED tape to help light the area up. That's going to give us clearance of around 720mm but please keep the ideas coming.

 

[Octopus]

Isn't the minimum distance from.a gas hob to a cooker hood 750 mm?

 

[telectrix]

found this on a "ask the expert" site.

A minimum of 750mm clearance is required above a gas hob and 650mm above an electric hob to a cooker hood. The gap may be reduced to 727mm above a gas hob but the hood must be cleaned regularly to prevent a fire hazard. Wall units either side of a hood must be at least 366mm above. A minimum of 300mm clearance is required either side of the hob if installing next to a larder unit or flammable material.

However, if the hood manufacturer specifies a less distance, this should be taken int consideration.

 

[FatAlan]

How far back from the front does the lintel go? If I was using that chimney liner I'd want it positioned centrally. Would it be possible to re position centrally an incorporate the extracter into the bottom of the chimney flush with bottom of the lintel? You'd have to remove the insulating material from around the liner to reposition though. Personally I'd look to take out chimney breast completely as the lintel is far to low IMO and wouldn't look right.

 

[davesparks]

Where is the other end of the duct? Would it be possible to mount a remote fan unit at the far end then just have a grille at the cooker end?