F - Mech Eng,Light,Heat,Weapons – 24 – H
Patent
F - Mech Eng,Light,Heat,Weapons
24
H
309/29, 309/31
F24H 1/10 (2006.01) H05B 3/42 (2006.01)
Patent
CA 1205841
"Water Heating Device" ABSTRACT Disclosed is a water heating device which comprises an outer cylindrical structure (1) having first and second openings (10, 11) and an inner cylindrical structure (2) having an inner passage (2a) therethrough and coaxially disposed in the outer cylindrical structure (1) to define an outer passage (2b) between the inner wall of the outer structure and the outer wall of the inner structure. The inner and outer passages are interconnected at one end (1b) of the outer structure and further communicated respectively with the first and second openings. The inner cylindrical structure (2) comprises a cylindrical ceramic support (3) and secured at one end with the other end (1a) of the outer cylindrical structure, a resistance heating element (4) on the outer surface of the ceramic support (3), and a ceramic sheet (5) wound on the heating element. The arrangement is such that the temperatures at the outer and inner surfaces of the inner cylindrical structure (2) are equalized to each other when water is supplied at a predetermined flow rate.
417730
Koga Ryoichi
Takahashi Yutaka
Gowling Lafleur Henderson Llp
Matsushita Electric Industrial Co. Ltd.
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