| 摘要 |
<p>Disclosed is a hand held appliance comprising a body having a fluid inlet for admitting fluid into the appliance a fluid outlet a duct lined with a material and a primary fluid flow path extending from the fluid inlet to the fluid outlet and through the duct. The material may be a foam or a felt and is a sound absorbing material a vibration absorbing material is an insulator is tuned to resonant frequencies of the appliance. The primary fluid flow path may be non linear. The duct may have a non circular cross section and may comprise a handle portion of the appliance and the handle portion of the duct is lined with said material. A fan unit may be provided located upstream of the handle portion. The duct may comprise a first handle portion and a second handle portion of the appliance. Also disclosed is a hand held appliance comprising a body having a fluid inlet for admitting fluid into the appliance a fluid outlet a duct lined with a material and a primary fluid flow path extending from the fluid inlet to the fluid outlet and through the duct.</p> |
