Positive displacement ventilation system
Inactive Publication Date: 2012-04-26
DAVENPORT MICHAEL
View PDF7 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0005]The present invention includes methods and apparatus employing positive displacement for ventilating an enclosed space, part
Problems solved by technology
Hot air trapped in an attic space can also leak into inhabited areas through utility and other openings in ceilings and walls.
However, while hot air does rise in the attic space and eventually flow out through the roof vents to be replaced by cooler air entering through the lower inlets, these types of passive attic ventilation systems generally provide insufficient circulation through the attic to prevent heat from building up in the attic space.
While such devices can move air much more quickly than passive attic ventilation systems, they are typically more expensive.
If such channels occur, a portion of the air in the attic may remain stagnant, and the attic will not be effectively ventilated.
Such incomplete ventilation may cause hot air to remain in the attic and cause undesirable heating in the inhabited areas of the building.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025]In the following description, the diagrammatic representations shown in FIGS. 1 and 2 will be referenced to provide an overall description of the features and operation of an apparatus embodying the principles of the present invention. FIGS. 4-9 will be referenced to describe examples of inflatable bags and bag attachment configurations that may be employed according to the present invention. FIGS. 10 and 11 will be referenced to describe how multiple inflatable bags may be arranged in implementations of the present invention. FIGS. 12 and 13 will be referenced to describe one preferred flow switching arrangement which may be used to fill and help evacuate an inflatable bag according to the invention, while FIG. 14 will be referenced to describe an alternate flow switching arrangement.
[0026]Referring to FIG. 1, a ventilation apparatus embodying the principles of the present invention includes inflatable bags 102, a blower 103, and a manifold made up of a flow switching arrange...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A method includes inflating one or more inflatable bags from a first evacuated condition within an attic space to an inflated condition. The inflatable bags are configured such that when they are in an evacuated condition, they take up a relatively small space in the attic space to be ventilated. In the inflated condition, however, the bags have a cumulative volume much larger than the cumulative volume of the bags when in the evacuated condition, and make up a desired fraction of the volume of the attic space to be ventilated. When the bags are inflated from the evacuated condition to the inflated condition, they displace a volume of atmosphere equal to the difference between the cumulative volume of the bags in the evacuated condition and the cumulative volume of the bags in the inflated condition. The bags are then evacuated from the inflated condition to the fully evacuated condition or at least a substantially evacuated condition so as to draw ventilation air into the attic space through one or more ventilation inlets to the attic space.
Description
TECHNICAL FIELD OF THE INVENTION[0001]The present invention relates to ventilation systems for enclosed spaces, and more particularly, to ventilation systems employing inflatable elements to displace the atmosphere from an enclosed space.BACKGROUND OF THE INVENTION[0002]The attic space included in many houses and other buildings can have a significant impact on cooling requirements for the inhabited portions of the building. In hot, sunny weather, sunlight incident on the roofing material quickly heats the material and much of this heat is eventually transferred to the attic air. The heat accumulated in an attic space may be transferred to the inhabited areas of the building by conduction through ceiling materials even when the ceiling is well insulated. Hot air trapped in an attic space can also leak into inhabited areas through utility and other openings in ceilings and walls.[0003]Numerous different systems have been developed to ventilate the hot air from an attic and replace it...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): E04B9/02B65D30/00F24F11/00F24F7/007F24F1/0059
CPCE04B9/02F24F5/0035Y02B30/545F24F2006/146F24F2001/0092F24F1/0007Y02B30/54F24F1/0059
InventorDAVENPORT, MICHAEL
OwnerDAVENPORT MICHAEL