Multiple extractor fans for smelly foods in open plan kitchen

[alitech]

Hi guys

I could not find a suitable place for my question so I wanted to post it here. I have a kitchen extension coming up and I wanted to deal with smelly foods for good. A cooker hood just doesn't cut it for me. I could think of many reasons why that would be the case, possibly clogged ducting, or inefficient hood or whatever the case, but as I have an opportunity, I want to take advantage and get an excellent air extraction system in place that deals with food smells effeciently, quickly, completely and without issues with draft (completely sealed when not in use). I also want to consider building regulations of course.

I would like to get ideas on how best this could be accomplished. I thought of a few ideas but not too sure about them.

I was looking for industrial extractor fans that I could just turn on when needed and they would just swoop everything out within a couple of minutes. I couldnt find one that would deal with draft when not in use.

Then I saw some ideas on Amazon like this

https://www.amazon.co.uk/dp/B00GY1GL02/ref=sspa_dk_detail_0?psc=1

This could go inside the ceiling and work with some ducting or pipes to take air to the outside.

In inlet could be something like this:

https://www.amazon.co.uk/Stainless-...coding=UTF8&psc=1&refRID=7EZ84SBTDY44PYQ8P0EG

with a butterfly flap inside to deal with draft.

https://www.amazon.co.uk/100mm-Extr...coding=UTF8&psc=1&refRID=7EZ84SBTDY44PYQ8P0EG

I could have a couple of these turn on with a single switch somewhere to deal with extra smelly food.

Thoughts? Suggestions? Criticisms please?

I am trying to think outside of the box on this, any help would be much appreciated.

 

[telectrix]

try cooking food that smells nice.

 

[alitech]

Not helpful

 

[Midwest]

The size & design of your kitchen will have impact on the extraction, along with what cooking appliances you intend to use.

Building control will stipulate extraction rate for your new kitchen extension, so ask them first to keep them happy.

You'll also need to bear in mind how you are going to run your ducting, in your ceiling space, bearing in mind joists, pipes, cables etc.

 

[alitech]

I should have added this detail, I am planning an open plan kitchen alongside dining table and living room all in one. Which makes this especially important. Imagine watching TV or having guests while cooking smells are all over the place.

 

[Octopus]

^^ whatever you pick, nothing will do what you want.

A wall and door or smells is your choice

 

[Midwest]

I should have added this detail, I am planning an open plan kitchen alongside dining table and living room all in one. Which makes this especially important. Imagine watching TV or having guests while cooking smells are all over the place.

Your going to have to go some with that. What cooking appliances will you have, and will they be located in different places in the kitchen?

 

[ruston]

And you will struggle with heating the room with the air flow required .

 

[Midwest]

You could consider a re circulating fan hood above hob/oven, and a separate extraction somewhere else.

I would think about contacting the fan manufactures, Xpelair, Vent Axia etc, and ask for some advice on your intended project.

 

[PEG]

Rushton got the main one

I giggled when i read the "draught flap",as the main draughts would not be there,but the places where those many extractors,were pulling their supply from.

Seen the commercial progression of this,in a pub,where the many kitchen extractors,reversed the flue gas direction,on the snug wood-stove.

Only sensible suggestion that springs to mind,would be a single point of extraction,with ducting to desired points,and heat-exchanger fitted pre-vent.
Nice and expensive,troublesome and impressive.

 

[PEG]

try cooking food that smells nice.

No,it wasn't helpful...but it WAS quick,correct,and funny.

 

[ruston]

Duplicate post . First in awhile .

 

[Andy78]

I want an open kitchen but don't expect smells to be able to escape from the open kitchen.
I want to cook people food but don't want them to allow them to smell it until they are eating it.

I think this one ranks up there with the guy who wanted the regs to change to allow more than one charging socket in a bathroom because he kept forgetting to charge his toothbrush that had years old depleted batteries.

 

[snowhead]

The best solution is to consult experts in Ventillation.
Otherwise you'll waste a lot of money and not acheive what you want.
You won't be able to cobble together a random selection of bits and make it work.

Search for a, local to you, company similar to these;
Commercial Kitchen Extraction Exhaust Systems | Unbeatable Prices with Next Day Delivery Available! - https://www.caterkwik.co.uk/shop/commercial-catering-equipment/extraction-systems/

 

[willy fixit]

Not helpful

But still funny!
Edit: Just seen PEGs post

 

[willy fixit]

When I'm cooking I want the guest to smell it and get their juices going. I'm with Andy78 in that It's an impossible task.
When I fry up a mackerel for breakfast I do it outside on the portable gas burner. And pretend I'm the hunter gatherer! (In truth it's my wife who hunts and gathers in Sainsburys!)

 

[Wilko]

Hi - just sharing what I've done at home, for what it's worth. House had a largish domestic cooker hood with 150mm outlet but air was recirculated through filters. This just wasn't doing the job, so I created a path out for 150mm metal flue and added a 150mm in line mixed flow fan. This setup now works well .

 

[telectrix]

When I fry up a mackerel for breakfast I do it outside

if you fried a mackerel here, you'd stay outside.disgusting,smelly,inedible, yuk. same with kippers and other creatures that fornicate in water.

 

[willy fixit]

When I fry up a mackerel for breakfast I do it outside

if you fried a mackerel here, you'd stay outside.disgusting,smelly,inedible, yuk. same with kippers and other creatures that fornicate in water.

Don't like fish then Tel?

 

[telectrix]

i'll cross the street to avoid walking past a fish butcher's shop.

 

[Octopus]

Don't like fish then Tel?

Unless its covered in batter!

 

[telectrix]

Unless its covered in batter!

it's still a bloody fish though. same as a trump is still an idiot even when covered in a hairpiece.

 

[alitech]

Hi - just sharing what I've done at home, for what it's worth. House had a largish domestic cooker hood with 150mm outlet but air was recirculated through filters. This just wasn't doing the job, so I created a path out for 150mm metal flue and added a 150mm in line mixed flow fan. This setup now works well .

Thanks for this, would like to learn more about your setup. So you had a circulating hood? Where did and how did you create a path out?

Can you show me what sort of fan you installed?

 

[Midwest]

Doooh hate it when my bestest is just pasted by, story of my life.

 

[PEG]

Hi - just sharing what I've done at home, for what it's worth. House had a largish domestic cooker hood with 150mm outlet but air was recirculated through filters. This just wasn't doing the job, so I created a path out for 150mm metal flue and added a 150mm in line mixed flow fan. This setup now works well .

Sounds groovy have you ever ----ed a pancake and wondered where it went?

 

[Wilko]

Yes a circulating hood. Finding a path out may not be easy, which was why they'd not bothered in my case, I suppose. Metal ducting is better for this application (in my humble opinion) as its fire proof and a lot harder for the mice to eat. Use rigid metal pipe if you can, but there is a flexible metal duct if you need it.
Sorry but the site is not letting me upload pics just now. Perhaps search on Manrose 150mm mixed flow fan and you'll get an idea of it, all 500m3 per hour

 

[Wilko]

Sounds groovy have you ever ****ed a pancake and wondered where it went?

No, but the cat flap now flaps

 

[alitech]

You could consider a re circulating fan hood above hob/oven, and a separate extraction somewhere else.

I would think about contacting the fan manufactures, Xpelair, Vent Axia etc, and ask for some advice on your intended project.

Absolutely not ignored. I was trying to read everyone of them and responding to the helpful ones.

Do you think getting a regular extractor fan and putting an in line mixed flow fan will double or triple the extraction rate? Hence becoming a lot more efficient?

 

[alitech]

Yes a circulating hood. Finding a path out may not be easy, which was why they'd not bothered in my case, I suppose. Metal ducting is better for this application (in my humble opinion) as its fire proof and a lot harder for the mice to eat. Use rigid metal pipe if you can, but there is a flexible metal duct if you need it.
Sorry but the site is not letting me upload pics just now. Perhaps search on Manrose 150mm mixed flow fan and you'll get an idea of it, all 500m3 per hour

Do you think getting a regular extractor fan and putting an in line mixed flow fan will double or triple the extraction rate? Hence becoming a lot more efficient?

The extension is being planned right now.. so I have freedom to do whatever

 

[StephenRowley]

I think snowhead right to do what you want to achieve needs professional advice. People on here are sparkies not ventilation engineers and while there some good suggestions. There's so much to kitchen ventilation you really need someone who really know what their doing. Venting a kitchen gets a bit more complicated because the air can be greasy not just damp. So stuff need to built in way to deal with these unique factors.

 

[StephenRowley]

I usually find with hoods it's not pipe work that get clogs it's the grease filter which are doing what there meant to as grease in pipe work can become a fire risk, plus fan don't like it either. Better to have a cleanable element to them.

 

[Wilko]

Do you think getting a regular extractor fan and putting an in line mixed flow fan will double or triple the extraction rate? Hence becoming a lot more efficient?

No efficiency gain possible in my view. But the original extraction rate can be improved particularly if it's a long run to the outlet. With a specialist designer they'll look at (in no particular order) the extraction rate, noise, proximity to cooking fumes, air flow in kitchen, filtering, flue design, fire safety, building regs ++.

 

[Electrical2go]

Hi Alitech,

I agree with many of the other posts...It's going to be a big ask as your open plan. You may need some form of industrial solution for your guests not to smell the food, though it would probably mean they couldn't hear the conversation.

Also it would be be beneficial to contact a ventilation manufacturer to help in the design.

Cheers Ivan

 

[static zap]

Can get pricey , if don't want to freeze in winter.
(Looked in on a local Sizzler pub ! )

 

[redbarnman]

This is not an uncommon problem given the current trend for open plan areas. Make the duct as large as possible, even going to 160mm over 150 makes a big difference to flow resistance, keep bends to a minimum and runs short. That way you can use the fan to extract air rather than make a huge noise. It also helps if you start the fan before you start cooking to get the air in the room moving towards the extractor. Do fit a cooker hood that is at least as wide as the cooker not a fan in the corner and get one with a good high flow as they can be turned down but you can't turn up a low power one. The nearer the source of cooking smells the more effective it will be.

 

[davesparks]

To reduce noise get an extractor where the fan is housed in an external unit.
They’re pretty ugly but they get the job done.