ELECTRIC HEATER FOR HYDRONIC HEATING SYSTEM Russian patent published in 2008 - IPC B61D27/00 

FIELD: transportation.

SUBSTANCE: electric heater for hydronic heating system contains sealed tank (1) with heat-transfer fluid (2), in the cover of which (3) tubular heating elements (4) connected in series are vertically fitted and protected by shroud (18). Fittings are tapped into side walls of sealed tank (1): inlet (5), equipped with electric pump (16), and outlet (6). Sealed tank (1) is hydraulically connected with installed upon it expander (12). This tank is made in the form of two hollow semicylinders having adjacent side surfaces. Semicylinders are permanently attached to each other and to common bottom (15) and detachably - to cover (3). Tubular heating elements (4) are fitted into cover (3) in staggered order and equally spaced from each other and from sealed tank (1) walls. In it's lower part, the sealed tank (1) is connected through inlet fitting (5) with expander (12) and makeup and filling pipe (8), and in it's upper part - through steam-air pipe (7).

EFFECT: improvement of device operation efficiency and reliability.

2 cl, 2 dwg