Dyson AM05 fan/heater - Page 1
Forum section: electronics / projects

author: Homer J Simpson
author_rank: Super Contributor
timestamp: February 05, 2014, 04:43:25 pm
content: Does any one here have one of these? $400 US is an awful lot of money for a fan.The design and tech. does look interesting though.Curious if you have one what you think. Also would be nice to see a teardown on one of them.http://www.dyson.com/fans/heaters/am05/am05-iron-blue.aspx

author: ConKbot
author_rank: Super Contributor
timestamp: February 05, 2014, 05:23:33 pm
content: Meh, probably only a fan, heating element, and maybe a motor controller for the fan in the base if its one of dyson's bldc motors, and not a shaded pole induction. And a whole bunch of plastic to duct it up to the airfoil loop. Probably slightly more interesting then tearing down a blender.

author: Homer J Simpson
author_rank: Super Contributor
timestamp: February 05, 2014, 07:35:46 pm
content: Dyson says it is a bladeless fan design. That's what I was curious about.Cant seem to find any pictures of the internals.

author: SeanB
author_rank: Super Contributor
timestamp: February 05, 2014, 07:46:16 pm
content: There is a patent for it. It uses a small fan that creates a high velocity air flow that is sent through a narrow slit and then drags a larger volume of slower moving air with it. The fan is there, just in the base and hidden.

author: Fraser
author_rank: Super Contributor
timestamp: February 05, 2014, 08:22:05 pm
content: So same principle as a aircrafts emergency escape slide inflator. I presume the bladless bit refers to no user accessable large whirling fan

author: SpectrHz
author_rank: Contributor
timestamp: February 05, 2014, 09:22:11 pm
content: I remember seeing this in stores when they came around, the air multiplier is what they go by believe. Impeller in the base, and air sprayed out of the airfoil hoop, clever little thing, but not worth 400 dollars IMHO.

author: NiHaoMike
author_rank: Super Contributor
timestamp: February 05, 2014, 09:35:29 pm
content: Quote from: Homer J Simpson on February 05, 2014, 07:35:46 pmThere's the Tesla turbine that's definitely bladeless. And depending on your definition of "blade", a common squirrel cage fan might be called "bladeless".

author: G7PSK
author_rank: Super Contributor
timestamp: February 05, 2014, 10:02:50 pm
content: I don't know how Dyson got a patent for that as industrial vacuum cleaners and ventilators have been made using the same principle for many years very often using compressed air rather than a fan. I have one myself that I bought in the 80's for sucking up swarf and grinding dust runs off standard workshop air line.

author: Fraser
author_rank: Super Contributor
timestamp: February 05, 2014, 11:14:12 pm
content: On a recent UK TV documentary detailing dangerous fake goods, they showed a Chinese copy of the Dyson bladeless Fans......... they were poorly built and burned well

author: Stonent
author_rank: Super Contributor
timestamp: February 06, 2014, 11:45:42 am
content: It is sort of a venturi effect. Like the fuel jets in a carburetor.

author: andtfoot
author_rank: Unknown
timestamp: February 06, 2014, 12:27:00 pm
content: I bought one of these recently (yes... they are bloooody expensive) partially out of curiosity, but mainly because I needed something compact for my work bench and the normal fan wasn't cutting it.The build quality seems pretty good, with lots of strain relief on cables, Nichicon caps, etc. As a fan it works pretty well. The 30-40°C days haven't given cause to try the heating function yet...Here are some photos (full size here):I wasn't game to get the top section apart, but I believe it is just hollow plastic with a heating element around the perimeter.

author: amyk
author_rank: Super Contributor
timestamp: February 06, 2014, 12:52:43 pm
content: Quote from: Aurora on February 05, 2014, 11:14:12 pmThey probably showed the worst (deliberately, since it's TV); the clones are just as effective as the original and much closer to their actual value --- it's just a ducted blower. They're loud and don't move much air, however. But I wouldn't trust either the original or a clone for a heater, the idea of plastic + heating element just doesn't sit well with me...

author: dannyf
author_rank: Super Contributor
timestamp: February 06, 2014, 01:06:23 pm
content: I have seen quite a few of those clones - they retail for about $40 - 50, some even cheaper. Comparable look / finish / functionality with the real thing but much louder - from the air rushing out of the slit. Dyson has some tricks there I suppose.

author: amyk
author_rank: Super Contributor
timestamp: February 06, 2014, 01:25:13 pm
content: Quote from: dannyf on February 06, 2014, 01:06:23 pmMight just be some flash from not-so-accurate injection molding, if that's the noise source instead of the fan motor itself.

author: NiHaoMike
author_rank: Super Contributor
timestamp: February 06, 2014, 05:40:57 pm
content: Quote from: andtfoot on February 06, 2014, 12:27:00 pmI would have just taped together a few PC fans and run them from a wall wart. Less than a tenth of the cost and works just as well if not better. (I actually tried out one of those Dysons at a store. A cheapo Cooler Master fan outperforms it, never mind a Delta even at low speed...) For heating, just add a Peltier, some CPU heatsinks, and a PC PSU, with the cold side redirected to the back. More efficient than a plain resistance heater since it largely works by concentrating the heat that is already in the room. (Turn it around and it makes a crude A/C, albeit not very efficient as it would heat up the room.)

author: Homer J Simpson
author_rank: Super Contributor
timestamp: February 07, 2014, 12:01:15 am
content: andtfootThanks for that. Perfect. Exactly what I was looking for.Would you sat it was worth $400??Looks nice but not $400 nice.KT

author: dannyf
author_rank: Super Contributor
timestamp: February 07, 2014, 12:31:39 am
content: QuoteCosts or functionality are not always the only factors in one's decision making.

author: Zero999
author_rank: Super Contributor
timestamp: February 08, 2014, 08:47:00 pm
content: Quote from: G7PSK on February 05, 2014, 10:02:50 pmSame with cyclonic separation, the patent system is broken.