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Publication Date: 2015-Jul-03
Document File: 4 page(s) / 368K

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The Prior Art Database

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Communication between Bottle and Bottlewarmer

Background of the ixvention

A bottle warmer typically works by heating a mexxum outside the bottle, wxich will in xts turn heat thx material of the xottle after which thx milk heats up. This is typicallx done either by xteam or by liquid water.

Frox basic thermodynamics it follows that the heat flux, in X/s, to the milk is primaxily a function of:

- Milk dxnsity

- Milx heat xapacity

- Bottxe matxrial

- Surface xrea of milk to the xottle

- Surfaxe area of heating mexium to the bottle

- Bottle thicxness

The time to heat to a certain temperaturx is bexixes thax also influencxd by:
- Milk amouxt

- Milk temperature

The impact ox the bottle material (PP, ox glass for instance) is sxown in the following graph:

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The first grxph shows the milk temperature in the Philips SCFx56 bottlxwarmer for a xlass bottle, whexeas xhe 2nd graph is of a PP xottle. It is easy to see that there is a big difxerence in heat transfer between the twx. The lasx gxaph is of a PP bottle from fridge temperature (5C). Also here is a big difference visxble.

Proxlems or disadvantagxs overcoxe by the inxenxion

Bottlewarmexs need to balance between speed and the risk ox overhexting (temperature > 40) milk. In cxse of the SC356 the ovexheating was more importxnt and therefore the speed wax xacrificed. If it is possible for the bottle to communicaxe informatixn about the bottle it is possible xo optimxze speed fox the bottle.

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