Heating element for water heaters with scale control

H - Electricity – 05 – B

Patent

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Details

H05B 3/78 (2006.01) F24H 1/20 (2006.01) F24H 9/18 (2006.01) H05B 3/40 (2006.01)

Patent

CA 2209369

An improvement in electrical elements for a water heater includes a mass attached to the element for reducing the deposition of hard water scale on element surfaces, particularly in the return bend areas. In one embodiment, a flow accelerator tube encloses the element. The flow accelerator tube has an inlet at one end and an outlet at a higher elevation at the opposite end. Water is induced to flow through the tube because of temperature change. In another embodiment, a solid mass with high surface area encloses the return bend areas to increase heat transfer at a lower temperature to reduce scaling and increase element life.

Amélioration d'un élément électrique pour un chauffe-eau comprenant une masse fixée à l'élément pour diminuer l'entartrage des surfaces de l'élément, surtout dans les coudes en U. Dans un modèle, un tube accélérateur d'écoulement enveloppe l'élément. Ce tube comprend une entrée à une extrémité et une sortie à une hauteur supérieure à l'extrémité opposée. De l'eau traverse le tube à cause du changement de température. Dans un autre modèle, une masse solide à grande surface enveloppe les coudes en U pour augmenter le transfert de chaleur à basse température, permettant une diminution de l'entartrage et une augmentation de la durée de vie de l'élément.

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