A packaged terminal air conditioner unit (PTAC) includes a bulkhead that defines an indoor portion and an outdoor portion. An outdoor fan is positioned within the outdoor portion and a controller is communicatively coupled with the outdoor fan for receiving a command to generate white noise and operating the outdoor fan to create the white noise at a desired decibel level to block out ambient sounds. A user may regulate the outdoor fan speed when the PTAC is not heating or cooling by setting a desired decibel level, e.g., using a control panel of the PTAC.

A packaged terminal air conditioner unit (PTAC) includes a bulkhead that defines an indoor portion and an outdoor portion. An outdoor fan is positioned within the outdoor portion and a controller is communicatively coupled with the outdoor fan for receiving a command to generate white noise and operating the outdoor fan to create the white noise at a desired decibel level to block out ambient sounds. A user may regulate the outdoor fan speed when the PTAC is not heating or cooling by setting a desired decibel level, e.g., using a control panel of the PTAC.

A downdraft element having a first flow opening and a second flow opening, wherein the first flow opening is arranged relative to the second flow opening at an angle 45°≤α≤135°, preferably substantially of 90°, so that at least the average flow direction of a fluid entering the first flow opening and exiting the second flow opening or vice versa is deflectable, characterized in that the downdraft element comprises at least one damper material receptacle on an inner side between the first flow opening and the second flow opening and at least one damper inserted into the damper material receptacle. The invention further relates to a corresponding assembly.

A silencer for installation in an air duct, in particular in a flat duct, having at least one sound-absorbing damping element extending essentially in a longitudinal direction (X), and having at least one holding device which accommodates the damping element at least in sections and has a fastening device for fixing the silencer in the air duct. An assembly comprising an air duct and such a silencer is further described.

A silencer for installation in an air duct, in particular in a flat duct, having at least one sound-absorbing damping element extending essentially in a longitudinal direction (X), and having at least one holding device which accommodates the damping element at least in sections and has a fastening device for fixing the silencer in the air duct. An assembly comprising an air duct and such a silencer is further described.

A bottom-mounted whole house fan assembly includes an intake plenum mounted over an opening in a ceiling of a building. The intake plenum is supported on the ceiling in the attic of the building. One end of a flexible duct is connected to the intake plenum and the other end of the duct is connected to a fan so that the fan draws air in the building through the intake plenum and duct and exhausts the air in the attic from whence the air is vented to atmosphere. The fan is supported by at least one vertical strut that is connected to the ceiling at the lower end of the strut and to a housing of the fan at the upper end of the strut. A sound dampener is interposed between the strut and the fan housing and/or the ceiling beam to which the strut is attached.

A bottom-mounted whole house fan assembly includes an intake plenum mounted over an opening in a ceiling of a building. The intake plenum is supported on the ceiling in the attic of the building. One end of a flexible duct is connected to the intake plenum and the other end of the duct is connected to a fan so that the fan draws air in the building through the intake plenum and duct and exhausts the air in the attic from whence the air is vented to atmosphere. The fan is supported by at least one vertical strut that is connected to the ceiling at the lower end of the strut and to a housing of the fan at the upper end of the strut. A sound dampener is interposed between the strut and the fan housing and/or the ceiling beam to which the strut is attached.

The present disclosure relates to a silencer module for a silencer bank of an air handling unit. The silencer module includes a support shell having a first inner wall and a second inner wall opposite the first inner wall. The silencer module also includes a first baffle coupled to the first inner wall, where the first baffle includes a first perforated baffle sheet, and a second baffle coupled to the second inner wall, where the second baffle includes a second perforated baffle sheet. The silencer module further includes an air flow gap that extends between the first perforated baffle sheet and the second perforated baffle sheet, where the air flow gap has a width that is substantially constant along a dimension of the first perforated baffle sheet and the second perforated baffle sheet that extends generally parallel to a direction of air flow through the air flow gap.

The present disclosure relates to a silencer module for a silencer bank of an air handling unit. The silencer module includes a support shell having a first inner wall and a second inner wall opposite the first inner wall. The silencer module also includes a first baffle coupled to the first inner wall, where the first baffle includes a first perforated baffle sheet, and a second baffle coupled to the second inner wall, where the second baffle includes a second perforated baffle sheet. The silencer module further includes an air flow gap that extends between the first perforated baffle sheet and the second perforated baffle sheet, where the air flow gap has a width that is substantially constant along a dimension of the first perforated baffle sheet and the second perforated baffle sheet that extends generally parallel to a direction of air flow through the air flow gap.

An air conditioning unit includes a conditioning chamber, a fan with a fan air input and a fan air output, and an evaporative unit. The fan and the evaporative unit are arranged in the conditioning chamber. The fan draws in entry air to enter the air conditioning unit, then through the evaporative unit, to condition the entry air to produce conditioned air. Within the conditioning chamber, the fan is positioned and configured such that at least 30% of an area of the fan air output are positioned above an average top surface of the evaporative unit, and that air from the at least 30% of the area of the fan air output is directed towards a wall of the conditioning chamber prior to being redirected downwards and through the evaporative unit.