Pump chambers minimizing formation of deposits
AssigneeSCM Corporation
InventorsCharles E. Cox, Roger V. Eeckhout
Life of this patent
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Abstract
Pump chambers usable in beverage makers, for example, have a liquid-contacting heated surface provided with abrupt discontinuities--e.g. sharp edges or corners--to promote flaking-off of mineral deposits. These edges may be fins of rectangular or triangular cross-section.
Claims19
In a heated pump chamber for supplying hot water to a utilization device, the pump chamber receiving the water to be heated through an inlet, said chamber communicating with said utilization device through an outlet and comprising a peripheral wall including a portion having an internal surface in contact with the water, heating means associated with said wall for transfer of heat to said water through said internal surface, at least said portion of the wall intervening between said heating means and said water and said internal surface accumulating thermally-insulating mineral deposits thereon in relation to mineral content of the water received;
- the improvement comprising combination therewith of a plurality of discontinuities formed on said internal surface whereby accumulation of mineral deposits is reduced.
A method of reducing the accumulation of mineral deposits from water heated in pump chambers having a peripheral wall including an inner surface in contact with the water, heat flowing to the water through the internal surface, comprising the steps of:
- forming a plurality of discontinuities on the inner surface of the wall prior to the steps of admitting the water into the chamber and heating the water in the chamber, thereby inducing the cracking and flaking of minerals deposited as a result of said heating.
Dependencies are inferred from the claim text.