US 5,672,052 A · Blower muffling apparatus

Abstract

A blower muffling apparatus includes a blower chamber for housing a blower therein, an exhaust chamber positioned adjacent the blower body side of a blower disposed in the blower chamber, communicating in one of upper and lower portions with the blower chamber, and having an exhaust port in the other portion, a muffling passage chamber disposed adjacent the blower chamber in the axial direction of the blower, and having one end communicating with the other portion of the exhaust chamber and the other end communicating with a discharge port of the blower through a flexible exhaust duct, and a duct accommodating chamber for accommodating the flexible exhaust duct therein, each of the chambers being surrounded by a sound-absorbing material. Exhaust gas of the blower is discharged from the flexible exhaust duct through the muffling passage chamber and the exhaust chamber to thereby absorb exhaust noise of the blower.

Claims15

Dependent claims

A blower muffling apparatus which houses a blower comprising a blower body on one side of an electric motor in the axial direction and a cooling fan on the other side of said motor and having an intake port and a discharge port in a lower portion thereof on the side of said cooling fan, said blower muffling apparatus comprising:

a blower chamber for housing said blower therein,
an exhaust chamber positioned adjacent said blower chamber on the side of the blower body of said blower, communicating with said blower chamber, and having an exhaust port,
a muffling passage chamber disposed adjacent said blower chamber in the axial direction of said blower, and having one end communicating with said exhaust chamber and the other end communicating with the discharge port of said blower through a flexible exhaust duct, and
a duct accommodating chamber for accommodating said flexible exhaust duct therein,
each of said chambers being surrounded by a sound-absorbing material.

2 more elements

A blower muffling apparatus which houses a blower comprising a blower body on one side of an electric motor in the axial direction and a cooling fan on the other side of said motor and having an intake port and a discharge port in a lower portion on the side of said cooling fan, said blower muffling apparatus comprising:

a blower chamber for housing said blower therein,
a cooling air supply system provided for said blower chamber and for supplying cooling air to said cooling fan of said blower directly and said blower chamber from above,
an exhaust chamber positioned adjacent said blower chamber on a side of the blower body of said blower, communicating with said blower chamber and having an exhaust port in a lower portion, thereof
a muffling passage chamber disposed adjacent said cooling air supply system above said blower chamber, and having one end communicating with of said exhaust chamber and the other end communicating with the discharge port of said blower through a flexible exhaust duct, and
a duct accommodating chamber for accommodating said flexible exhaust duct therein,
each of said chambers being surrounded by a sound-absorbing material.

3 more elements

Dependencies are inferred from the claim text.

Blower muffling apparatus

Life of this patent

Blower muffling apparatus

Life of this patent

Abstract

Claims15