h a l f b a k e r yNo serviceable parts inside.
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When I take a mug of coffee into the workshop, it's too hot to drink, so I put it down. When I remember it an hour later, it's cold.
So I got myself an insulated stainless steel mug. My coffee remains scalding hot all day long.
What is needed (apart from the memory of a younger man) is a cup which
will permit rapid cooling to a target temperature, then limit further cooling to maintain that temperature.
I propose a modification of the twin walled stainless steel mug:
Lining the outside wall are alternating vertical strips of copper and fibrous insulator. On the outside face of the inner wall are similar strips, so that small rotations of the inner relative to the outer can produce alignment or misalignment of similar strips.
When like strips are aligned, the contents will cool quickly.
A bimetal coil in the base rotates the inner when the target temperature is achieved, aligning each copper strip with an insulated strip, thus maintaining the contents at a more stable temperature.
The target temperature can be adjusted using a dial in the base of the mug, which adjusts preload on the bimetal coil.
Eutectic Coffee Temp Regulation
Eutectic_20Cup
[bs0u0155, Jul 06 2021]
[link]
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//apart from the memory of a younger man// - you'd like the memory of a younger man? - oh, right, you meant it *that* way... |
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As an aesthetic add-on, if the inner and outer shells and the insulators were transparent, there would be a visual indication of temperature and a bit of gadget factor. |
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Jenkin's last day at the office began by replacing the bi-
metallic coil in his boss' mug with parts of a retractable
pen and bits of plastic paperclips. [+] |
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You might support the cup above an insulating container. A bimetallic strip trips a latch when the drink is sufficiently cool and drops the cup in and closes the lid. |
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//apart from the memory of a younger man// Idea balances out time taken to find cooling coffee cup, each time it is misplaced. [+] |
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<<Low-tech version of this idea: removable cozy.>> |
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Fails on requirement for memory. If I could remember to put the cosy on, I'd remember to drink the coffee. |
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//remember to drink the coffee// |
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What if you happen to have made two cups? Do you have to remember to drink them both? |
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Taking the lower tech direction to it's logical conclusion: |
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Learn to tolerate cold coffee, or |
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Don't take drinks into the workshop, or |
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Don't exist (this solves a lot of issues). |
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An alternative design uses two semicircular finned heatsinks joined by a bimetallic strip hinge. Press the device agains a hot mug and the strip flexes, causing it to enfold the mug and keep the heatsink in contact. |
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When the mug cools, the strip flexes the other way, and the heatsink detaches and falls off, alerting the drinker to the fact that their drink is at the exact right temperature. |
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The deluxe version contains a .22 LR blank cartridge. When the spring flexes back, the striker releases, firing the cartridge. The gas blast flings the heatsink segments forcefully away from the mug, and the reaction shatters the mug and sprays warm liquid over the surrounding area. The loud explosion and the subsequent spray of wet ceramic shrapnel is an unmistakeable signal. |
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We have an excellent track record of
consistently producing devices that invariably
explode violently (irrespective of whether
that was actually part of the original
requirement specification). |
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It is my belief that the "Americano" should be prepared
with warm water rather than hot water. That way, the
espresso and water mix is immediately at drinkable
temperature. |
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[+] for clever use of bimetallic strip to add motion to a
coffee cup. The simplicity of coffee pairs well with this
simple, electronics-free design. |
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