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A ventilation system and the method of its use, the ventilation system is typically, though not exclusively, used with tight houses or buildings in which many of the cracks which can allow air and contaminates to randomly enter and exit have been sealed. The ventilation system allows for a user adju

A ventilation system and the method of its use, the ventilation system is typically, though not exclusively, used with tight houses or buildings in which many of the cracks which can allow air and contaminates to randomly enter and exit have been sealed. The ventilation system allows for a user adjustable minimum flow of outside air volume flow rate into the house or building, and provides for automatic adjustment of the outside air volume flow rate into the house or building to maintain the air pressure inside the house or building at a level which is determined by reference to the relatively constant soil gas pressure beneath the house or building.

대표청구항 ▼

A ventilation system for use in a house or building, which house or building sets upon a foundation atop of underlying soil and is equipped with a heating and air conditioning system comprised of a cold air return, a blower fan and a high efficiency particulate filter; which ventilation system compr

A ventilation system for use in a house or building, which house or building sets upon a foundation atop of underlying soil and is equipped with a heating and air conditioning system comprised of a cold air return, a blower fan and a high efficiency particulate filter; which ventilation system comprises, in combination with the heating and air conditioning system, a series combination of a prefilter and an inlet air blower, which prefilter and inlet air blower are attached to one another by way of a common duct, which common duct, at one end thereof, has access to the atmosphere outside the house or building, and which common duct, at the other end thereof, attaches to the cold air return of the heating and air conditioning system of the house or building; which house or building heating and air conditioning system is fashioned such that essentially all air entering the cold air return passes through the high efficiency particulate filter and and is caused by the blower fan of the heating and air conditioning system to circulate through the house or building and either leave through an opening in the house or building, such as an open door or window or by way of an exhaust fan, or return to the cold air return; which ventilation system further comprises a pressure difference monitoring sensor, which pressure difference monitoring sensor monitors the air pressure inside the house or building and also monitors soil gas pressure beneath the foundation of the house or building without significantly altering said soil gas pressure; which pressure difference monitoring sensor produces a signal which is proportional to the difference between the two identified pressures, which signal is used to regulate the operation of the inlet air blower so as to increase air volume flow rate when the air pressure in the house or building is at a level, when compared to the soil gas pressure, lower than a user selected level, so that the air pressure inside the house or building is increased, and to again operate at a reduced air volume flow rate when the air pressure inside the house or building is at, or above, the user selected level with respect to the soil gas pressure.