Venturi Ridge Vent

Abstract

A venturi ridge vent has an air-permeable vent body configured for mounting at the ridge of a pitched roof. The vent body defines a first opening and an opposing second opening and defines a flow path for air moving between the first and second openings. The first and second openings are disposed on opposing sides of the ridge when the vent body is mounted to the roof. The flow path defines a throat intermediate to the first and second openings. The throat area is less than the first or second opening areas to define a venturi. The attic is in fluid communication with the flow path proximal to the throat when the vent body is mounted to the roof.

Description

I. STATEMENT OF RELATED APPLICATIONS[0001]This application claims priority from U.S. Provisional Patent Application 62 / 378,985 filed Aug. 24, 2016 by John C. Henderson, which is incorporated by reference as if set forth in full herein.II. BACKGROUND OF THE INVENTIONA. Field of the Invention[0002]The Invention relates to roofing and to roofing ventilation. The Invention is a venturi ridge vent for use at the ridge of a pitched roof. The Invention utilizes the venturi effect to reduce the air pressure at the ridge to draw more air from under the roof deck than would otherwise be the case.B. Statement of the Related Art[0003]As used in this document, the term ‘roof’ refers to the top portion of a building that separates the attic of the building from the outside air and that protects the building from the elements. The term ‘attic’ refers to an air space under a roof. ‘Attic’ also includes the air space between a ceiling and a roof deck of a building having a cathedral ceiling. A roof ...

AI Technical Summary

Benefits of technology

The invention is a ventilation system for attic spaces that uses buoyant air to increase the velocity of air moving through the system. This increases the air pressure gradient between the eave and ridge, pulling attic air from the space. The system also uses a fabric with small perforations to increase air permeability and prevent the entry of insects, debris, water, or snow. The technical effect is improved ventilation and prevention of clogging of the attic space.

Problems solved by technology

If that water vapor is trapped under the impermeable shingle roof, the resulting condensation can damage the roof, can damage the remainder of the structure and can promote growth of mold within the attic.

During cold weather, heat within the inhabited space of the structure will leak into the attic space, which also warms the air in the attic space.

If any portion of the roof is starved for ventilation air, then the lack of airflow through the air-starved attic space may cause the problems associated with excess moisture.

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