Venturi Effect Chimney Cap

The vac u stack is a round device with stationary vanes which produces a venturi effect thereby creating a vacuum on the inside of the chimney as the wind is blown against.

Venturi effect chimney cap.

There are no moving parts to bind or malfunction. This work on the venturi principle and is named after an italian physicist giovanni batista venturi 1746 1822. The streamline flow of the wind around the vacu stack prevents wind from blowing into the chimney even when the wind is deflected downward. The venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section or choke of a pipe.

Usually the most economical solution is to either install rain caps which divert the wind from being blown down the internal flue tiles or by installing a vac u stack. The vacu stack creates a venturi that causes flue gases to flow up and out of the chimney. The present invention relates to a chimney with venturi effect 1 used in discharging the waste gases 50 to outside 60 on the configuration using any kind of fuel such as wood coal fuel oil or natural gas for different purposes directing the wind 70 coming from any direction to the chimney inlet 11 therefore comprising directing flap gates 21 and directing flaps 20 improving. Vacu stack chimney caps may eliminate the costly unsightly need of raising the chimney venturi effect the vacu stack when the wind blows the air is forced around vacu stack chimney caps rather than though their openings.

The chimney cap is designed to improve air flow so woodstove exhaust doesn t backpuff. I became convinced that a chimney cap designed to create a venturi effect would be the answer to my. The venturi effect the secret to getting a flue to draw is to have a constriction in the chimney.