Aerodynamic suction ventilator

a ventilator and air suspension technology, applied in ventilation systems, lighting and heating apparatus, heating types, etc., can solve the problems of high wind flow on the roof, high turbulent and complex wind flow, and create positive pressure, so as to minimize the chance of wind damage to the building envelope, improve the effect of air relief, and simple and reliabl

Active Publication Date: 2012-09-11
RENSCI IP HLDG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Roof components and materials are susceptible to uplift damage caused by strong winds.
This is because of the fact that the wind flow on the roof is highly turbulent and complex, frequently deviating from the situation the Kelly equalizer system is designed for.
Strong down-wash flow also occurs frequently due to the effects of the edge / corner vortices or the influences of adjacent taller structures, which creates positive pressure, potentially on the parts of the roof where the Kelly system unit is installed.
Although the Kelly method also includes a valve intended to “prevent” any positive pressures from entering into underneath the membrane, the air tightness of the contracted valve sleeves is hardly sufficient to block out the infiltration of positive pressures.
Such additional mechanism also complicates the system, increases the probability or chances of component and system failure, and raises the cost of the system as well.
However, none provides a simple and effective method.
Most of them involve complicated and expensive moving parts such as turbines, fans and associated bearings etc., which also increase the chances of mechanical failure.

Method used

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  • Aerodynamic suction ventilator
  • Aerodynamic suction ventilator
  • Aerodynamic suction ventilator

Examples

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Embodiment Construction

[0022]FIGS. 1 through 3 illustrate one of the preferred basic configurations of the present invention, as being mounted on a horizontal surface as an example. FIG. 1 is the side view of the aerodynamic suction ventilator and FIG. 2 is its top view, while FIG. 3 shows the 3—3 cross-sectional view. A hollow base body 310 of convex shape is attached and mounted onto a surface, with any appropriate means, while a hollow raised body 320 of oval shape is supported and secured to the base body with a plurality of elongated hollow members, for example, 330, 340 and 350 herein. The base body 310 and raised body 320 are so configured that the free space 360 formed between them is narrower near their center than along their outer perimeter, forming an airflow path that first contracts and then expands under any approaching wind direction. The number and size of the support members should be sufficient to support the raised body 320 but not be excessive to over-occupy the free space 360 formed ...

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Abstract

A surface mounted device includes a hollowed base body mounted on a building or vehicle exterior, and a hollowed raised body supported and secured on the base body with hollowed elongated members. A free space is formed between the base body and the raised body. An opening or openings are facilitated on, and near the center of, the lower surface of the raised body, to connect the free space with the internal space of the base body through the hollowed raised body and hollowed elongated support members. The base body and the raised body are configured in such a way that the free space between them is narrower at the center than along the perimeter. This forms an airflow path that is first contracting towards the center and then expanding afterwards for any approaching wind direction, providing a venturi mechanism. The device thus creates a low air pressure in the free space near the center and hence suction effect at said opening, and communicates the suction effect to any space that is connected to the internal space of the base body.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is entitled to the benefit of Provisional Patent Application Ser. No. 60 / 500,957, filed 2003 Sep. 08.BACKGROUND[0002]1. Field of Invention[0003]This invention relates to an improved air exhaust system, which can be utilized in the field of building and vehicle ventilation, as well as in the field of roof construction for creating suction or negative pressure underneath a membrane or other roof materials against wind uplift.[0004]2. Discussion of Prior Art[0005]Roof components and materials are susceptible to uplift damage caused by strong winds. U.S. Pat. Nos. 4,223,486; 4,557,081 and 4,888,930 to T. L. Kelly, Waterbury, Conn. taught a method to equalize or balance the uplift on the upper surface of the membrane by channeling the negative pressure therein to underneath the membrane.[0006]That method, while intended to tap the negative pressures that occur in the roof corner and edge areas, has the potential to actually fe...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): F23L17/02B60H1/24B60H1/00E04H12/28F24F7/02
CPCB60H1/248F24F7/02
InventorLIN, JASON JIANXIONG
OwnerRENSCI IP HLDG