Power vent blower assembly for gas water heater

A water heater comprising a combustion chamber, gas burner means located within the combustion chamber for producing hot exhaust gases, means for heating water with the hot exhaust gases, a flue having a lower end communicating with said combustion chamber, and having an upper end, and a power vent blower assembly including a blower having an inlet and an outlet, and a conduit adapted to communicate with the ambient atmosphere of said water heater, said conduit including a first end communicating with said upper end of said flue, a second end communicating with said blower inlet, and means for mixing gases from said flue with air from the ambient atmosphere of said water heater, said mixing means including a first projection extending inwardly toward the center of said conduit and in the direction of gas flow through said conduit on one side of said conduit, and a second projection extending inwardly toward the center of said conduit and in the direction of gas flow through said conduit on the other side of said conduit.

A water heater comprising a combustion chamber, gas burner means located within the combustion chamber for producing hot exhaust gases, means for heating water with the hot exhaust gases, a flue having a lower end communicating with said combustion chamber, and having an upper end, and a power vent blower assembly including a horizontal conduit extending along a generally horizontal axis, having a first end adapted to communicate with the ambient atmosphere of said water heater, and having a second end, a blower having an inlet communicating with said second end of said horizontal conduit, and having an outlet, a vertical conduit extending along a generally vertical axis, having a lower end communicating with said upper end of said flue, and having an upper end communicating with said horizontal conduit intermediate said first and second ends of said horizontal conduit, means located adjacent said lower end of said vertical conduit for restricting gas flow from said flue through said vertical conduit, and means located adjacent said upper end of said vertical conduit for mixing gases from said flue with air from the ambient atmosphere of said water heater.

A heater comprising a combustion chamber, gas burner means located within the combustion chamber for producing hot exhaust gases, heat exchanger means for heating a fluid with the hot exhaust gases, a flue having a lower end communication with said combustion chamber, and having an upper end, and a power vent blower assembly including a conduit having a first end communicating with said upper end of said flue, and having a second end, a blower having an inlet communicating with said second end of said conduit, and having an outlet adapted to communicate with the atmosphere, first means adjacent said upper end of said flue for restricting gas flow through said conduit, second means adjacent but spaced from said first means for restricting gas flow through said conduit, and means between said second means and said blower inlet for mixing gases from said flue with air from the ambient atmosphere of said heater.

A heater comprising a combustion chamber, gas burner means located within the combustion chamber for producing hot exhaust gases, heat exchanger means for heating fluid with the hot exhaust gases, a flue having a lower end communicating with said combustion chamber, and having an upper end, and a power vent blower assembly including a blower having an inlet and an outlet, and a conduit adapted to communicate with the ambient atmosphere of said water heater, said conduit including a first end communicating with said upper end of said flue, a second end communicating with said blower inlet, and means for mixing gases from said flue with air from the ambient atmosphere of said water heater, said mixing means including a first projection extending inwardly toward the center of said conduit and in the direction of gas flow through said conduit on one side of said conduit, and a second projection extending inwardly toward the center of said conduit and in the direction of gas flow through said conduit on the other side of said conduit.

A heater comprising a combustion chamber, gas burner means located within the combustion chamber for producing hot exhaust gases, heat exchanger means for heating fluid with the hot exhaust gases, a flue having a lower end communicating with said combustion chamber, and having an upper end, and a power vent blower assembly including a horizontal conduit extending along a generally horizontal axis, having a first end adapted to communicate with the ambient atmosphere of said water heater, and having a second end, a blower having an inlet communicating with said second end of said horizontal conduit, and having an outlet, a vertical conduit extending along a generally vertical axis, having a lower end communicating with said upper end of said flue, and having an upper end communicating with said horizontal conduit intermediate said first and second ends of said horizontal conduit, means located adjacent said lower end of said vertical conduit for restricting gas flow through said vertical conduit, and means located adjacent said upper end of said vertical conduit for mixing gases from said flue with air from the ambient atmosphere of said water heater.