Vertical Door Fan Shutter

a vertical door fan and shutter technology, applied in the field of vertical door fan shutters, can solve the problems of affecting the operation and airflow affecting the operation of the ventilating system, so as to achieve the effect of easy construction, simple construction and low maintenan

Inactive Publication Date: 2008-09-25
HH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]An advantage of the present invention is a fan shutter that is simple in construction, durable, and easy to construct.
[0014]Another advantage is a fan shutter that requires little maintenance.
[0015]Another advantage is a fan shutter that is inexpensive.
[0016]Another advantage is a fan s...

Problems solved by technology

These ventilation systems are usually complex and are connected to the air handling or heating and air conditioning system of the building.
A disadvantage of horizontal louvers is that dust ...

Method used

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Examples

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Embodiment Construction

[0025]While the following description details the preferred embodiments of the present invention, it is to be understood that the invention is not limited in its application to the details of construction and arrangement of the parts illustrated in the accompanying drawings, since the invention is capable of other embodiments and of being practiced in various ways.

[0026]FIG. 1 shows a front view of the fan shutter 10 of the present invention. Fan shutter 10 has a housing 11 that covers exhaust fan 24 and that supports doors 17. Housing 11 has a top 12, a bottom 13 and sides 14. The front end (inlet side) 25 is, preferably, triangular in shape with a center post 16. Doors 17 are mounted pivotally to center post 16 with hinges 18. Doors 17 are biased to close the open front end of housing 11 when the fan is off. Doors 17 are biased in a closed position, preferably, by the force of gravity. This is accomplished by mounting housing 11 vertically, but having the front end 25 tilt downwar...

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PUM

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Abstract

A fan shutter having one end attachable to an exhaust fan and the opposite inlet end having a pair of vertical doors that are biased to close when the fan is off and to open by the force of vacuum when the fan is on. The use of vertical doors prevents the accumulation of dust and dirt on the doors. The vertical doors pivot horizontally in a housing that may have any desired shape, including a tubular shape with a bell mouth. The tubular bell mouth shutter design further provides improved air flow characteristics and decreased stress on the exhaust fan, compared to conventional fan shutters.

Description

TECHNICAL FIELD[0001]The present invention relates generally to the field of fan shutters and, more particularly, to fan shutters having a vertical orientation and which prevent air flow through a fan when the fan is off.BACKGROUND ART[0002]Buildings often have ventilation systems for the exchange of air between the building and the outside. These ventilation systems are usually complex and are connected to the air handling or heating and air conditioning system of the building. Other ventilation systems are less complex and are merely for exhausting stale air from the building, for introducing fresh air into the building, or for basic temperature regulation by exhausting hot or cold air from the building as necessary.[0003]Various shutters, dampers, and closure panels for fans are known to regulate the exchange of air between the inside and outside of a building. For example, a series of horizontal louvers can be constructed to remain closed when the fan is off, but are pulled open...

Claims

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Application Information

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IPC IPC(8): F24F13/00F04D25/14F24F7/007F24F13/04F24F13/08F24F13/14
CPCF04D25/14F24F13/1426F24F13/1413F24F7/007
Inventor JENKINS, LESLEY RAYDANIELS, WAYMON NEAL
Owner HH TECH
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