ARTHESIO innovative electric kettle

ARTHESIO Master Degree in Design & Engineering 2014/2015 Design Studio Development 2 Professors Roberta Gorno, Alberto Villa, Paolo Nobili Assistant Lecturers Francesca Randone

Group 4 Simone Paolo Bancora Lorenzo Cordella Gianluca Tamburini

Intro

The original product and basic elements

Steam pipe for shut down

Filter

Hot metal plate Electronics and heating resistance

Lodging base

KwK 220 elettric kettle by

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About tea brewing Boiled water is often used for tea, thus using the kettle to brew it could be an added value. But how is it really done?

When: Tea leaves must be dropped into water after it has boiled.

How long: Brewing time ranges from ~2 to ~8 minutes depending on the kind of tea.

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Tea brewing issues Tea gets spilled over the working areea, in particular when pulling out the tea from the water.

Kettles can get dirty and are not easy to clean inside. Elements such as the pipe interfere.

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A kettle meant for brewing Some kettles on the market already integrate the brewing function as an added value.

However they come with issues regarding complexity, functionality and price.

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Project Brief

A new electric kettle designed to brew tea Not complex or mechanical Easy to clean

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Concept

How to obtain the brewing?

Several possibilities were tested along the way.

These solutions looked merely alternatives to existing products.

Innovation would have to be achieved through a smarter idea.

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The inspiration Some products use flexible TPE parts to vary their geometry.

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The idea A slanted plane was introduced to the mechanism to add rotation to the usual translation.

The plane acts as a mirror for the flexible geometry, allowing to save space in addition to the movement.

NE A L P cosß * h = 0,6 h ß 2 ß 2

Exploiting this property of the material could provide a minimal-mechanical system to achieve both translation and rotation of a basket.

h

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Testing Models were used to test the idea

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Developing First drafts of the new product

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The brewing system

1

2

Position 1: the basket containing tea is lifted and slanted to save space. This allows to boil water.

Position 2: the basket is lowered in the water after the boiling to perform the brewing Intro

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How it works Closing the lid The lid come off completely to improve cleaning (a ma jor concern in a product designed to make tea). It seals with a bayonette clutch pressing on a TPE gasket.

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How it works Moving the basket for brewing By just pushing or pulling on the cap the basket is moved from position 1 (submerged) to position 2 (emerged) and back.

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How it works Pulling out the basket By rotating the cap the basket is extracted instead. It can then be opened to put tea inside.

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How it works The right amount of water Arthesio’s interface helps to measure water in numbered cups to avoid wasting.

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How it works The right amount of water As in the original model, a lighted PMMA switch is pressed to turn on the kette

The electrical components were not changed and the product still uses the original patented system by StrixÂŽ 22 / 45

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A short video will now recap the sequence of actions described

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Thechnical details

The architecture

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The architecture TPE system

Basket

Steam pipe Bowl

Electronics Lodging base

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Product configuration Basket movement

l 21° 21° l

The new lid component made of overmolded TPE allows for the movemente of the basket without adding complexity or parts.

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Product configuration steam pipe Ease to clean was a priority. The steam pipe has been detoured inside the handle to free the inside from any obstacle.

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Simplified assembly

Lodging base

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Simplified assembly

Lodging base Lower shell

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Simplified assembly

Lodging base Lower shell Electronics

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Simplified assembly

Lodging base Lower shell Electronics Bowl

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Simplified assembly

Lodging base Lower shell Electronics Bowl Upper shell

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Lodging base Lower shell Electronics Bowl Upper shell Handle

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Lodging base Lower shell Electronics Bowl Upper shell Handle Handle cover

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Simplified assembly

Lodging base Lower shell Electronics Bowl Upper shell Handle Handle cover Filter

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Simplified assembly

Lodging base Lower shell Electronics Bowl Upper shell Handle Handle cover Filter Lid 37 / 45

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Couplings & details Some details from the product:

Filter overmolding

TPE-lid junction

Basket

Glass/upper shell coupling

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Plastic parts PC-ABS Easier to mold than PC Less stiff than PC Higher tg than ABS (not enough alone) Material already used in hot running small appliances

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Lid PC-ABS and TPE-S Food grade TPE Can make bound with PC and ABS High tg in a component exposed to hot steam

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Bowl Borosilicate glass Higher thermal resistance Widely used in home appliances

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