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paulraphael

Whirlpool patent for sous-vide induction gizmo with magnetic stirrer

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It does for me. It looks pretty cool, and it would/will be interesting to see how it plays out IRL.

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A magnetic stirrer hotplate.

Basic Lab ware since the 60s except it uses induction

Hard to see what's novel and unanticipated after reading the claims.

I'm amazed it got a patent.

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It looks like the stirrer mechanism is rather different than a standard stir bar that can fly off the magnet and end up quivering at the far edge of the vessel instead of actually stirring.

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On 9/13/2018 at 8:41 AM, gfweb said:

A magnetic stirrer hotplate.

Basic Lab ware since the 60s except it uses induction

Hard to see what's novel and unanticipated after reading the claims.

I'm amazed it got a patent.

 

I don't know about unanticipated. I've been anticipating such a thing for a while, but without any luck. 

 

What's unclear to me is the design / purpose of the vessel. Seems like the thing should work with any induction-capable pot on top.

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35 minutes ago, paulraphael said:

 

I don't know about unanticipated. I've been anticipating such a thing for a while, but without any luck. 

 

What's unclear to me is the design / purpose of the vessel. Seems like the thing should work with any induction-capable pot on top.

 "Long felt need" is different than saying that no prior product essentially does what the invention does...which is what patent people mean by "unanticipated"

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I made a DIY version of this many years ago (soon after joining eGullet after reading the initial SV threads).  I still use them (I made more than one) today.  Mine aren't induction, but that works for me since my cookware is AllClad LTD and is non-magnetic

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32 minutes ago, KennethT said:

I made a DIY version of this many years ago (soon after joining eGullet after reading the initial SV threads).  I still use them (I made more than one) today.  Mine aren't induction, but that works for me since my cookware is AllClad LTD and is non-magnetic

What brand hot plate? Got photos?

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Interesting. As I understand it. The way to demagnetize a magnet is to use an induction magnetic field.

 

dcarch

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All this talk and I still have no idea what one would do with such a contraption.

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@gfweb I didn't use a commercial hotplate - I made my own... I'll try to post pics a little later...

 

@dcarch I am curious about that as well - and how are they setting up a rotating mag field slow enough to spin their stirrer plate without causing problems with the inductive field?

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I am assuming the inventor must have worked out all details before spending a few thousand dollars to hire a patent attorney to file for this patent.

 

But I don't understand:

If the cooking vessel is induction capable, wouldn't it  block all magnetic field to the rotating stirrer?

From the diagram, I don't see how the induction coil is shield from the magnetic motor, wouldn't the motor be fried in a few seconds?

The whole concept of sous vide is that it makes no difference what the cooking heat source is, why the complicated expensive wifi induction  system?

 

dcarch

 

 

 

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On 9/15/2018 at 12:23 AM, btbyrd said:

All this talk and I still have no idea what one would do with such a contraption.

 

If I understand the thing correctly, it would be ideal for precision cooking anything liquid. The stirrer would mean you're circulating the food, not just the heat transfer medium. 

 

So it would work great for making custards, tempering chocolate, pasteurizing small quantities of anything, and the killer app for me ... cooking ice cream bases. 

 

 

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