Window Fan
A window fan is provided that includes a fan housing and chamber assembly. The fan housing includes a front panel with an air outlet and a rear panel with an air inlet and defines a central chamber. The chamber assembly is positioned within the central chamber of the fan housing and includes a cylindrical fan rotatably mounted within the chamber and driven by a fan motor. An air duct assembly is rotatably mounted within the chamber having an air duct panel that is moveable from an open to closed position such that the air duct panel, when in the closed position blocks the airflow through the window fan and permits air flow through the window fan when in the open position. The fan of the window fan assembly may be a cross flow blower fan.
1 . A window fan, the window fan comprising:
a fan housing having a front panel with an air outlet and a rear panel with an air inlet, the fan housing defining a central chamber;
a chamber assembly including a fan rotatably mounted within the chamber and driven by a fan motor and an air duct assembly rotatably mounted within the chamber having an air duct panel moveable from an open to closed position where the air duct panel blocks the airflow through the window fan when in a closed position.
2 . The window fan of claim 1 further comprising a second motor for moving the air duct panel from an open to closed position.
3 . The window fan of claim 1 where fan is a cross flow blower.
4 . The window fan of claim 1 where the fan motor is a reversible motor.
5 . The window fan of claim 2 where the second motor is a reversible motor.
6 . The window fan of claim 2 where second motor is offset from the fan motor and where the chamber assembly further includes a gear assembly driven by the second motor for rotating the air duct panel.
7 . A window fan, the window fan comprising:
a fan housing having an air outlet and an air inlet;
a cross flow blower fan mounted within the fan housing and driven by a fan motor; and
an air duct panel rotatably mounted around the cross flow blower driven by a panel motor, where the panel motor is configured to rotate the air duct panel independent of the cross flow blower fan from an open to closed position, where the motor rotates the air duct panel to blocks the airflow through the window fan when in a closed position.
8 . The window fan of claim 7 where fan motor is a reversible motor.
9 . The window fan of claim 7 where the panel motor is a reversible motor.
10 . The window fan of claim 7 where the panel motor is offset from the fan motor and where the panel motor drives a gear assembly to rotate the air duct panel.
11 . A window fan, the window fan comprising:
a fan housing having an air outlet and an air inlet;
a cross flow blower fan mounted within the fan housing and driven by a fan motor; and
an air duct panel rotatably mounted around the cross flow blower driven by a panel motor, where the panel motor is configured to rotate the air duct panel independent of the cross flow blower fan from an open to closed position, where the motor rotates the air duct panel to blocks the airflow through the window fan when in a closed position; and
a sill insert positioned on the bottom of the fan housing.
12 . The window fan of claim 11 where the fan housing has first and second end caps and where the window fan further includes at least one modular block for positioning on the side of at least one of the first or second end caps.
13 . The window fan of claim 12 where the at least one modular block for positioning on the side of at least one of the first or second end caps includes a block sill insert for aligning with the sill insert positioned on the bottom of the fan housing.
14 . A window fan, the window fan comprising:
a fan housing having a front panel with an air outlet, a rear panel with an air inlet and first and second end caps, the fan housing defining a central chamber;
a chamber assembly including a fan rotatably mounted within the chamber and driven by a fan motor and an air duct assembly rotatably mounted within the chamber having an air duct panel moveable from an open to closed position where the air duct panel blocks the airflow through the window fan when in a closed position; and
at least one modular block for positioning on the side of at least one of the first or second end caps.
15 . The window fan of claim 1 further including a sill insert positioned on the bottom of the fan housing.
16 . The window fan of claim 15 where the at least one modular block for positioning on the side of at least one of the first or second end caps includes a block sill insert for aligning with the sill insert positioned on the bottom of the fan housing.
17 . The window fan of claim 16 where the at least one modular block for positioning on the side of at least one of the first or second end caps includes a plurality of modular blocks.
18 . The window fan of claim 16 where the at least one modular block for positioning on the side of at least one of the first or second end caps includes a plurality of modular blocks having pairs of modular blocks of various lengths.
19 . The window fan of claim 14 where fan is a cross flow blower.
20 . The window fan of claim 14 where the fan motor is a reversible motor.