US 12,736,252 B2Granted

Sound muffler device for residential ductwork system

OwnerDerek J Sceatsinventor

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Abstract

Provided is a sound muffler device and method for reducing sound transmission from a ductwork system. The sound muffler device acts as an insert insertable into a register vent of the ductwork system to reduce the sound transmitted out from the ductwork system. The sound muffler device includes a baffle housing having an inlet section, an outlet section, and baffle housing walls. The inner surfaces of each of the baffle housing walls are covered with sound-absorbing material. The sound muffler device further includes baffle plates configured within the baffle housing. The baffle plates are also covered with sound-absorbing material on either one side or both sides. The sound muffler device further includes a labyrinth channel through which the sound waves pass along with the flowing air. The sound absorbing material within the housing and around the baffle plates absorb the sound waves to lower the level of sound.

Claims26

Dependent claims

A sound muffler device (100) adapted for use with a ductwork system (10) of a house, comprising:

a baffle housing (102) having an inlet section (108), and an outlet section (109), the baffle housing (102) comprising at least a top housing wall (107), a bottom housing wall (103), a front housing wall (110), a first rear housing wall (105), and a pair of lateral side walls (106), wherein inner surfaces of at least one of the top housing wall (107), the bottom housing wall (103), the front housing wall (110), the first rear housing wall (105), and the pair of lateral side walls (106) are covered with sound-absorbing material (122);
wherein, the inlet section (108) extends from an end (103a) of the bottom housing wall (103) to an end (105a) of the first rear housing wall (105), and the outlet section (109) is configured on the top housing wall (107) opposingly positioned to the bottom housing wall (103);
at least one first baffle plate (120a), and at least one second baffle plate (120b) are configured within the baffle housing (102), wherein each of the first baffle plate (120a), and the second baffle plate (120b) is covered with the sound-absorbing material (122) on either one side or both sides;
and
a labyrinth channel (121) formed within the baffle housing (102), wherein the sound muffler device (100) is removably insertable into the register vent (101c) to rest inside the register vent (101c) of the ductwork system (10), and wherein the air and sound entering and traveling through the ductwork system (10) passes through the inlet section (108) to the outlet section (109) and out from the register vent (101c) is absorbed by the sound-absorbing material (122) with minimal impact to airflow within the ductwork system (10).

2 more elements

A sound reducing device (100), comprising:

a baffle housing (102) having an inlet section (108), and an outlet section (109), the baffle housing (102) comprising at least a top housing wall (107), a bottom housing wall (103), a front housing wall (110), a rear housing wall (105), and a pair of lateral side walls (106) wherein inner surfaces of at least one of the top housing wall (107), the bottom housing wall (103), the front housing wall (110), the rear housing wall (105), the pair of lateral side walls (106) are covered with sound-absorbing material (122);
wherein, the inlet section (108) is located between the bottom housing wall (103) and the rear housing wall (105), and the outlet section (109) is configured on the top housing wall (107) opposingly positioned to the bottom housing wall (103);
at least one first baffle plate (120a), and at least one second baffle plate (120b) are configured within the baffle housing (102), wherein each of the first baffle plate (120a), and the second baffle plate (120b) is covered with the sound-absorbing material (122) on either one side or both sides;
and
a labyrinth channel (121) formed within the baffle housing (102), wherein the sound muffler device (100) is removably insertable into the register vent (101c) to rest inside the register vent (101c) of the ductwork system (10), and wherein the sound entering and traveling through the ductwork system (10) of a house passes through the inlet section (108) to the outlet section (109) and then out from a register vent (101c) is absorbed by the sound-absorbing material (122) with minimal impact to the airflow.

2 more elements

A method for reducing sound transmission from a ductwork system of a house comprising the steps of:

dislocating, a vent cover (101d) from a register vent (101c) opening of the ductwork system (10);
inserting a sound muffler device (100) into the register vent (101c), the sound muffler device (100) being removably insertable into the register vent (101c) to rest inside the register vent (101c) of the ductwork system (10), the sound muffler device (100) comprising:
a baffle housing (102) having an inlet section (108), an outlet section (109), at least one baffle housing wall (107,103,110,105, 106), wherein the inner surfaces of at least one of the baffle housing wall (107,103,110,105, 106) is covered with sound-absorbing material (122);
at least one first baffle plate (120a), and at least one second baffle plate (120b) configured within the baffle housing (102), wherein each of the first baffle plate (120a), and the second baffle plate (120b) is covered with the sound-absorbing material (122) on either one side or both sides;
a labyrinth channel (121) formed within the baffle housing (102);
and
passing the conditioned air along with the sound within the ductwork system (10) through the inlet section (108) to the outlet section (109) via the labyrinth channel (121) of the baffle housing (102) so that the sound gets absorbed by the sound-absorbing material (122) within the baffle housing (102).

4 more elements

Dependencies are inferred from the claim text.