Gas-venting domestic hot water circulation pump

Details Gas-venting domestic hot water circulation pump Gas-venting domestic hot water circulation pump

1999-05-24

2000-11-21

Walberg, Teresa

Pumps

Motor driven

Electric or magnetic motor

417420, 417424, 96166, 96174, F04B 1700, F04B 3504

Patent

active

061494070

ABSTRACT:
When a hot water supply line has to be filled with hot water at all times it requires that the contents of the hot water supply line has to be returned to the hot water heater by a circulator pump. When gas-bubbles form in the hot water supply line, they tend to form a bubble in the suction area of the pump impeller, which leads to an interruption of the flow. In order to prevent this, a circulator pump is used which has a calming chamber in which some of the gases separate, the rest of the air is moved into the spiral channel around the impeller due to an eccentricity of the vortex inside of the impeller. Finally also this gas stream flows into the calming chamber from where the gases leave through a venting valve.

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