Built-in vacuum cleaning system with improved acoustic damping design

An improved power unit for a vacuum cleaning system including a canister having a sidewall, a top and a bottom, an upper interior hollow compartment housing a removable dirt and dust collection receptacle and including a partition base which separates the upper interior hollow compartment from a second interior compartment which houses at least one motor and armature interiorly extending therefrom, with the at least one motor emitting noise when the at least one motor is turned on, the improvement comprising:

• a. first damping means defining one end of said second interior compartment to thereby house said at least one motor between said partition base and the first damping means;
• b. second damping means spaced apart from said first damping means whereby said sidewall, said first damping means and said second damping means define an acoustic damping chamber;
• c. said first damping means comprising at least one opening to permit a portion of the armature of said at least one motor to extend through said first damping means into said acoustic damping chamber;
• d. exhaust means in said sidewall to permit hot air exhaust from said at least one motor to exit said second interior compartment;
• and
• e. air intake means in said sidewall to permit cooling air to enter said acoustic damping chamber;
• f. whereby said first damping means and said second damping means reduce the noise emitted from said at least one motor.

An improved power unit for a vacuum cleaning system including a canister having a sidewall, a top and a bottom hollow section, a first interior hollow compartment housing removable dirt and dust collection receptacle which causes dirt and dust to fall into the bottom hollow section and including a partition base which separates the first interior hollow compartment from a second interior compartment located near the top of said canister and which houses at least one motor and armature interiorly extending therefrom, with the at least one motor emitting noise when the at least one motor is turned on, the improvement comprising:

• a. a baffle within said canister positioned to define one end of said second interior compartment;
• b. a first acoustic damping means supported on said baffle;
• c. a second acoustic damping means supported on and below said top of said canister;
• d. said sidewall, said baffle and said second acoustic damping means defining an acoustic damping chamber;
• e. said baffle and said first acoustic damping means comprising at least one opening to permit a portion of the armature of said at least one motor to extend through the baffle and first acoustic damping means into said acoustic damping chamber;
• f. exhaust means in said sidewall to permit hot air exhaust from said at least one motor to exit said second interior compartment;
• and
• g. air intake means in said sidewall to permit cooling air to enter said acoustic damping chamber;
• h. whereby said first acoustic damping means and said second acoustic damping means reduce the noise emitted from said at least one motor.

An improved power unit for a vacuum cleaning system including a canister having a sidewall, a top and a bottom hollow section, a first interior hollow compartment housing a removable dirt and dust collection receptacle which causes dirt and dust to fall into the bottom hollow section and including a partition base which separates the first interior hollow compartment from a second interior compartment located near the top of said canister and which houses at least one motor and armature interiorly extending therefrom, with the at least one motor emitting noise when the at least one motor is turned on, the improvement comprising:

• a. first damping means defining one end of said second interior compartment to thereby house said at least one motor between said partition base and the first damping means;
• b. second damping means spaced apart from said first damping means whereby said sidewall, said first damping means and said second damping means define an acoustic damping chamber;
• c. said first damping means comprising at least one opening to permit a portion of the armature of said at least one motor to extend through said first damping means into said acoustic damping chamber;
• d. exhaust means in said sidewall to permit hot air exhaust from said at least one motor to exit said second interior compartment;
• and
• e. air intake means in said sidewall to permit cooling air to enter said acoustic damping chamber;
• f. whereby said first damping means and said second damping means reduce the noise emitted from said at least one motor.

An improved power unit for a vacuum cleaning system including a canister having a sidewall, a top and a bottom which enclose an interior chamber, an inlet port to receive air from a separate dirt and dust collection means, the interior chamber housing at least one motor and armature extending therefrom, with the at least one motor emitting noise when the at least one motor is turned on, the improvement comprising:

• a. a baffle within said canister positioned to divide the interior chamber into a first compartment and a second compartment;
• b. first acoustic damping means supported on said baffle;
• c. a second acoustic damping means supported on and below said top of said canister;
• d. said sidewall, said baffle and said second acoustic damping means defining the bounds of said second compartment to create an acoustic damping chamber;
• e. said at least one motor and a portion of said armature located in said first compartment and said baffle and said first acoustic damping means comprising at least one opening to permit a portion of the armature of said at least one motor to extend through the baffle and first acoustic damping means into said acoustic damping chamber;
• f. exhaust means in said sidewall to permit hot air exhaust from said at least one motor to exit said first compartment of said interior chamber;
• and
• g. air intake means in said sidewall to permit cooling air to enter said acoustic damping chamber;
• h. whereby said first acoustic damping means and said second acoustic damping means reduce the noise emitted from said at least one motor.

An improved power unit for a vacuum cleaning system including a canister having a sidewall, a top and a bottom to define an interior chamber, an inlet port to receive air from a separate dirt and dust collection means, a partition base within the interior chamber, the interior chamber housing at least one motor and armature extending therefrom, with the at least one motor emitting noise when the at least one motor is turned on, the improvement comprising:

• a. first damping means located within said interior chamber and dividing the interior chamber into a first compartment and second compartment;
• b. said at least one motor and a portion of said armature located within said set compartment and set between said partition base and said the first damping means;
• c. second damping means spaced apart from said first damping means whereby said sidewall, said first damping means and said second damping means define said second compartment to form an acoustic damping chamber;
• d. said first damping means comprising at least one opening to permit a portion of the armature of said at least one motor to extend through said first damping means into said acoustic damping chamber;
• e. exhaust means in said sidewall to permit hot air exhaust from said at least one motor to exit said interior chamber;
• and
• f. air intake means in said sidewall to permit cooling air to enter said acoustic damping chamber;
• g. whereby said first damping means and said second damping means reduce the noise emitted from said at least one motor.