Heating systems – Water – Expansion tanks
Patent
1987-03-05
1988-02-09
Bennett, Henry
Heating systems
Water
Expansion tanks
237 56, F24D 310
Patent
active
047237058
ABSTRACT:
A ventilating device for a closed conduit system comprising a housing (7) with a liquid throughflow conduit (11) extending through end walls (8,9) of the housing. The throughflow conduit (11) has a liquid permeable part (13) which is directed towards an upper air vent (23) and the end edges of which are spaced from the end walls, and the side edges of which part (13) adjoining the end edges are preferably provided with wing-like elements (21,22) whose free edges form gaps with the inner wall of the housing. Liquid flows out beneath the conduit through those gaps (D,E) located between the end walls and the end edges of the wing-like element, and small air bubbles enclosed in the liquid form larger air bubbles which rise up between the wing-like element and the inner wall of the housing and depart through the vents (23).
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