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  Fresh air intake systemRelated Patent Categories: Ventilation, Having Forced Recirculation, Including Automatic Control MeansThe Patent Description & Claims data below is from USPTO Patent Application 20070207722. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] The present invention is an air intake system for use within residential buildings in conjunction with the existing air duct system. BACKGROUND OF THE INVENTION [0002] Today residential homes are equipped with heating, ventilation and air conditioning units (HVAC units) that condition the air within the home tailored to the user's needs. Air is drawn from within the house into the HVAC unit where it is then heated or cooled and through the air ducts delivered back to the house. Using and re-using the air within the home becomes a problem when entities such as pollen, mold spores and other seasonal allergens are introduced into the air. Re-using the air only re-circulates these entities. [0003] Moreover, homes that have recently been constructed typically have a "new home smell" which is essentially chemical pollutants in the air. There is a need to remove the chemical pollutants. [0004] Additionally pressurizing a building even slightly inhibits air infiltration of pollutants such as pollen, mold spores, and seasonal allergens from entering penetrations areas, i.e. poor door and window seals, chimney, bathroom, dryer and stove exhaust ducts. Very similar to vacuum packaging, pressurizing a building creates suction or a seal. This suction can be noticed when in a pressurized house by opening a door; the door will pull itself shut. Or opening a window will create a whistling sound. This is caused by the difference in pressure between the inside of the building and the outside, when a window or door is opened, the higher pressure will escape to the lower pressure area much like when the air is let out of a balloon. [0005] There is a need for a system that avoids re-circulating air within a home. Further, there is a need for a system that prevents air infiltration of pollutants. [0006] U.S. Pat. No. 6,484,712 B1 issued to Lyons et al. on Nov. 26, 2002 shows a vent cover assembly. Unlike the present invention Lyons' invention is merely a means for ventilation and is not intended for use with a building's HVAC unit. [0007] U.S. Pat. No. 6,312,327 B1 issued to Hachman et al. on Nov. 6, 2001 shows a vandal resistant fresh air filter housing. Unlike the present invention Hachman's invention is for use with a motor vehicle and is directed towards providing fresh air with out compromising the security of the vehicle. [0008] U.S. Pat. No. 3,901,135 issued to Nilsson et al. on Aug. 26, 1975 shows a device for distributing ventilating air. Unlike the present invention Nilsson's invention is not intended for use with a buildings' HVAC unit. [0009] U.S. Pat. No. 3,722,539 issued to Wilmes on Apr. 17, 1973 shows a fresh air vent. Unlike the present invention Wilmes' invention is merely a ventilation device and is not intended for use with a buildings' HVAC unit. [0010] Thus, a need has been established for a device that can introduce fresh air into the home to be circulated. Additionally there is a need for a device that will pressurize a building to inhibit air pollutants such as pollen and other allergens from entering the building, thus keeping the air within the building cleaner. SUMMARY OF THE INVENTION [0011] The present invention is intended for use in residential buildings to draw in outside air and have it mix with the air inside the building to improve indoor air-quality through dilution and building pressurization. Pressurizing a building even slightly inhibits air infiltration of pollutants such as pollen, mold spores, and seasonal allergens from entering penetrations ie, poor door and window seals, chimney, bathroom, dryer and stove exhaust ducts from entering the building. [0012] By adding a six-inch duct from the inlet side of the central air duct to the fresh air intake, filtered outside air can be introduced while air pressurizing and ventilating the building. [0013] The present invention can introduce up to 100 CFM of outside air providing for 72,000 to 144,000 cubic feet of air into the home or indoor environment per day. This approach allows for pressurization of the home or indoor environment which eliminates the entry of fine particles, gasses and odors whenever the buildings' HVAC unit fan is running. [0014] The introduction of 50 CFM of outside air (3000 ft..sup.3 per hour) has no negative effect on the performance of the HVAC system as it represents approximately 3 to 5% of total air volume going through the HVAC unit. To increase the air ventilation and pressurization, a larger connecting air duct or an induct booster fan can be installed. [0015] The present invention can be adjusted to provide desired air changes to dilute pollutants and boaters and maintain high oxygen content in the air. The amount of fresh air ventilation can be regulated by dampers located on the fresh air intake system. [0016] The present invention connects an external filter return grill to the return side of the central air heating and cooling system by an air duct and specialized housing/connectors. When the central air is on it will draw-in filtered outside air, which improves air quality through filtration, serialization, dilution, and pressurization. [0017] The present invention is configured to enhance its efficiency and sterilization properties. A pre-filter which is made of polyester and carbon is used to arrest a 85% of the particles .gtoreq.5 micron and absorb gasses, such as ozone and auto exhaust, and chemicals from landscape fertilizers and pesticides. The second filter is a reusable electrostatic filter. It has anti-microbial properties combined with low airflow resistance and high particle capture ability. An optional third filter, which is a high efficiency filter or High Efficiency Particulate Arrestance (HEPA) and traps 99.97% of particles at 0.3 microns or larger is available. [0018] Next the volume of the air is regulated by a manual or mechanized damper. Simply closing an opening the damper will control the amount of fresh air being introduced. The damper is followed by a one-way valve that prevents house air from going outside when the fan is not operational. [0019] After the one-way valve there is a germicidal ultraviolet lamp. The lamps stay cleaner longer due to the air filters, this helps maintain the lamps' intensity. The 6'' round galvanized duct which houses the lamps also assist in the lamps intensity by the reflectance properties of the galvanized sheet metal duct. Also the lamps are placed parallel to the air flow which increases dwell or exposure time to the ultraviolet light increasing its effectiveness and longevity. [0020] When the central air is in operation it will draw/suck in outside air through the present invention. Once the filtered outside air enters the return box it mixes with the return air from the house. The mixed air (house and filter outside air) is then heated or cooled and dehumidified as usual prior to distribution through the existing air ducts. [0021] The present invention has one exterior filter return grill that is installed through the buildings wall or foundation. The size of the present invention is tailored to fit into standard preexisting foundation vents. Continue reading... Full patent description for Fresh air intake system Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Fresh air intake system patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Fresh air intake system or other areas of interest. ### Previous Patent Application: Blower exhaust backflow damper Next Patent Application: Air pressure control system and method Industry Class: Ventilation ### FreshPatents.com Support Thank you for viewing the Fresh air intake system patent info. IP-related news and info Results in 0.35634 seconds Other interesting Feshpatents.com categories: Computers: Graphics , I/O , Processors , Dyn. Storage , Static Storage , Printers |
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