Electric heating device for the production of hot water and/or steam
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United States of America Patent
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Apr 25, 2017
Grant Date -
Apr 16, 2015
app pub date -
May 24, 2013
filing date -
May 24, 2012
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Abstract
A heating device (1) which includes: an assembly (2-4) made of a heat-conducting material and has a heating resistor (5) and has a defined passage (7a, 7b) close to the resistor (5), for a flow of water to be heated. The assembly (2-4) includes a central body (2) having two main opposite surfaces (2a, 2b) to which respective closing shells (3, 4) are connected in a liquid-tight manner. Between each main surface (2a, 2b) and the associated shell (3, 4) there is defined a passage following a serpentine path (7a, 7b). The serpentine passages (7a, 7b) communicate with each other by a through-hole (10) provided between the main surfaces (2a, 2b) of the central body (2). The heating resistor (5) is provided in the central body (2), between the main surfaces or faces (2a, 2b) such that it is in a heat-exchanging relationship with both the serpentine passages (7a, 7b).
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